It has been
determined that 5% of drivers checked at a road stop show traces of
alcohol
and 10% of drivers checked do not wear seat belts. In addition, it
has been observed that
the two infractions
are independent from one another. If an officer stops five drivers
at
random:
a) Calculate the
probability that exactly three of the drivers have committed any
one
of the two offenses.
b) Calculate the
probability that at least one of the drivers checked has committed
at
least one of the two offenses.
ANSWER:
(OR) TRY THIS
a)
= 0.0000012
b)
= 0.0248
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